摘要
通过能量平衡原理研究了厚钢板激光深熔焊接的热源模型，得出了激光功率与光斑大小、焊接速度等的关系，并讨论了激光光束质量．实验采用非稳腔输出的６～８ｋＷ高功率高质量的激光焊接４，６，８ｍｍ厚的Ａ３钢板，其焊接速度分别为３．２，２．２，０．９ｍ／ｍｉｎ，焊接深宽比均超过２１，其中６ｍｍ钢板深宽比达到４１．着重研究了激光焊接工艺。
A heat mode of laser penetrating of thick steel plates has been investigated and the relations between laser power and beam size as well as welding speed have been obtained through energy balance. Meanwhile, the laser beam quality has been discussed. The 4 mm, 6 mm and 8 mm A 3 steel plates have been welded by 6￣8 kW high power from an unstable resonator high quality laser in the experiment. The welding speeds were 3.2 m/min, 2.2 m/min, and 0.9 m/min respectively. The welding depth/width ratio of these samples were more than 2∶1 while that of the 6 mm steel plate was 4∶1. The technology of laser welding was emphasized. The testing of tensile strength and the experiment of rolling of steel plates through a rolling mill were carried out also.
出处
《中国激光》
EI
CAS
CSCD
北大核心
1997年第2期179-184,共6页
Chinese Journal of Lasers
基金
国家"八.五"重点攻关项目
关键词
钢板
激光焊接
laser, welding, steel plate
